Electrosyntheses from aromatic aldehydes in a flow cell. Part I. The reduction of benzaldehyde.
The reduction of benzaldehyde in acidic water-methanol mixtures has been re-investigated in a membrane flow cell with a lead cathode with the objective of defining conditions where le- reduction occurs and the C6H5CH.OH radical intermediate is formed in high selectivity. It is shown that it is the cathode potential which controls the ratio of le-/2e- product (i.e. hydrobenzoin to benzyl alcohol) and a high rate generation of the radicals is also favoured by an efficient mass transport regime.
Guena
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T
Department of Chemistry, The University, Southampton, UK.
Pletcher
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D
D001547:Benzaldehydes / Q000138:chemical synthesis / Q000737:chemistry*; D004563:Electrochemistry; D004566:Electrodes; D006863:Hydrogen-Ion Concentration; D000432:Methanol; D010084:Oxidation-Reduction; D014867:Water
D001547:Benzaldehydes; D014867:Water; D000432:Methanol